package com.xxxx.springsecuritydemo.service;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.authority.AuthorityUtils;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.stereotype.Service;

/**
 * UserDetailsService实现类
 *
 * @author zhoubin
 * @since 1.0.0
 */
@Service
public class UserDetailsServiceImpl implements UserDetailsService {

	@Autowired
	private PasswordEncoder pw;

	@Override
	public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {

		System.out.println("执行了loadUserByUsername方法");

		//1.查询数据库判断用户名是否存在，如果不存在就会抛出UsernameNotFoundException异常
		if (!"admin".equals(username)){
			throw new UsernameNotFoundException("用户名不存在！");
		}
		//2.把查询出来的密码（注册时已经加密过）进行解析，或者直接把密码放入构造方法
		String password = pw.encode("123");
		return new User(username,password, AuthorityUtils.commaSeparatedStringToAuthorityList("admin,normal,ROLE_abc," +
				"/main.html,/insert,/delete"));
	}
}